藏野驴鼻形杯环线虫的形态及其变异类型

首次对藏野驴的蠕虫调查结果表明：鼻形杯环线虫是危害该动物的主要虫种，对其形态观察测量发现，部份雄虫的口囊，交合伞及伞肋以及雌虫属部形态与国内外主要资料记载存在明显差异，且表现出四种变异类型：（１）背肋对称或基本对称２型；（２）痛肋不对称型；（３）侧枝退化型；（４）宽口囊型。

Characters and Variation-type Cylicocyclus Nassatum in Tibetan wild Donkey

Helminthology of Tibetan wild Donkey were investigated Cylicoryclus nassatum isthe main species danger to the Donkey health.some of baccal capsule,bursa capulatrix and raysof male and caudal Characters of female are significently diffeeance as compared with informationrecorded in present.Authors think that is polygamous variation of the wild animals in Qing-Tibetplateau and it showed four variation types:(1)The bursa capulatrix is symmetry or in general ofsymmetry,(2)The bursa capulatrix is non-symmetry:(3)The lateral branch is degeneration:(4)The buccal capsule is the wide.